All 4 Uses

approach
in
The Call of the Wild
(Edited)

The house was approached by gravelled driveways which wound about through wide-spreading lawns and under the interlacing boughs of tall poplars.
p. 4.3

approached = gone to
He did not like to be approached on his blind side.
p. 32.2

approached = got near
In fact, his conduct approached that of a bully, and he was given to swaggering up and down before Spitz's very nose.
p. 65.6 *

approached = got near (figuratively)
Joe was sourer than ever, and Sol-leks was unapproachable, blind side or other side.
p. 88.3

unapproachable = unwilling to allow anyone to come close

standard prefix: The prefix "un-" in unapproachable means not and reverses the meaning of approachable. This is the same pattern you see in words like unhappy, unknown, and unlucky.

Definitions:

(1) (approach as in: approached the city)
to get closer to (near in space, time, quantity, or quality)
(2) (approach as in: use the best approach)
a way of doing something; or a route that leads to a particular place
(3) (approach as in: approached her with the proposal)
to begin communication with someone about something -- often a proposal or a delicate topic
(4) (meaning too rare to warrant focus)
More rarely (and typically only in classic literature), the phrase nearest approach to as used in "her nearest approach to an apology" or "her nearest approach to a smile" typically means that "something is as close to something else as it ever gets." "As near an approach to" can have a similar meaning.